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 Post subject: cant fix CODE P0507
PostPosted: Mon May 23, 2022 6:37 pm 
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Joined: Wed Feb 19, 2020 3:14 pm
Posts: 12
Year and Trim: SSE 1998
Hi Folks

I cant fix the code P0507. (Idle Control System RPM Higher Than Expected)

Checked in two repair shops, they checked IAC valve, Throttle Body, fixed a couple of Vaccum Leaks. But the check Engine with this code appears again.

When Idle (Normal temp) in Drive the RPMs are about 650-700 RPMs, changinf to Neutral or Park changes the RPM to aprox 1000 RPM.

I have several months trying to fix this. What else can be?

Thanks in advance


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 Post subject: Re: cant fix CODE P0507
PostPosted: Mon May 23, 2022 8:32 pm 
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Joined: Wed May 21, 2008 11:47 pm
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Location: Philadelphia
Year and Trim: 95 SLE
You say the shop checked the IAC, was it ever replaced?

Was the throttle stop screw moved at all?

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 Post subject: Re: cant fix CODE P0507
PostPosted: Tue May 24, 2022 2:33 pm 
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Year and Trim: SSE 1998
You say the shop checked the IAC, was it ever replaced?
A=IAC Valve was not replaced.

Was the throttle stop screw moved at all?
A= I dont know, they cleaned the throttle body but they didnt told me anything regarding the stop screw


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 Post subject: Re: cant fix CODE P0507
PostPosted: Tue May 24, 2022 10:55 pm 
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Certified Bonneville Nut
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Joined: Wed May 21, 2008 11:47 pm
Posts: 6648
Location: Philadelphia
Year and Trim: 95 SLE
I would replace the PCV valve and if that doesn't work try a new IAC.

_________________
Image
95 SLE... a keeper. 241k miles. Low and Slow.
97 BMW 528i
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy (RIP)
02 Jag X-type
03 BMW M5
05 Chevy Cobalt LS
07 Infiniti G35s 6MT (Sold)
07 Ducati Monster S2R 800 with DS1000 swap
83 Yamaha IT175K
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.


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 Post subject: Re: cant fix CODE P0507
PostPosted: Sat May 28, 2022 3:20 pm 
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Joined: Wed Feb 19, 2020 3:14 pm
Posts: 12
Year and Trim: SSE 1998
Tnx. Will try


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 Post subject: Re: cant fix CODE P0507
PostPosted: Sun Jun 05, 2022 11:24 pm 
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Joined: Wed Feb 19, 2020 3:14 pm
Posts: 12
Year and Trim: SSE 1998
Hi folks

I changed the pcv and run the car for 1 week. Today the check engine light turned off.

Hope pcv fixed the problema


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 Post subject: Re: cant fix CODE P0507
PostPosted: Wed Jun 29, 2022 1:29 pm 
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Joined: Wed Feb 19, 2020 3:14 pm
Posts: 12
Year and Trim: SSE 1998
Hi.

Unfortunately the code was shown again.
RPM on P or N are about 1100rpms.

Could be the IAC?

thanks


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